Incandescent lightbulbs are on the way out, and compact fluorescent bulbs (CFLs) and light emitting diodes (LEDs) are quickly moving in. But now there is a new player entering the market as well: ESL (electron stimulated luminescence) bulbs promise to match the energy efficiency of CFLs or LEDs in a non-toxic, low-cost package.
In a nutshell, electron stimulated luminescence uses accelerated electrons to stimulate phosphors coating the inside of a bulb, which makes the surface of the bulb glow with visible light (essentially the same principle as an old cathode ray tube television). Developed by Vu1 Corporation, the quality of these lights is similar to that of an incandescent bulb, but Vu1 states that ESL bulbs are 70% more energy efficient.
ESL bulbs are also easily usable in typical household fixtures: they’re fully dimmable, there is no delay or “warm up” when they are switched on, and they contain no toxic materials such as mercury.
Vu1 is currently producing its first UL-certified bulb: an R30 flood model equivalent to a standard 65w incandescent bulb, with a projected lifespan is 10,000 hours and a price tag around $20. The company plans to offer other common models in the next year, including a standard “A” type bulb as well as R-40 and R-25 models.
To learn more or to inquire about ordering, visit the Vu1 Corporation website.